Genette Forti B27 100 tablets (vitamins + amino acids + minerals + natural planst) for Pigeons Fortis B 27 is a complex tonic containing 27 active ingredients. With 12 vitamins, amino acids with 4, its minerals and plants stimulate the appetite and digestion, Forti B 27 is the perfect complement to strengthen the nestlings and adult birds during competitions, breeding, moulting and convalescence